import Vue from 'vue'
import Router from 'vue-router'
import Login from '@/components/Login'
import Home from '@/components/Home'
import Welcome from '@/components/Welcome'
import Users from '@/components/user/Users'
import Rights from '@/components/power/Rights'
import Roles from '@/components/power/Roles'


//导入全局样式表
import '../assets/css/global.css'

Vue.use(Router)

const router =  new Router({
  routes: [
    //重定向
    { path:'/',redirect:'/login' },
    { path: '/login',name: 'Login',component: Login },
    { 
      path: '/home',
      name: 'Home',
      component:Home,
      redirect:'/welcome',
      children:[
      { path: '/welcome',name: 'Welcome',component: Welcome },
      { path: '/users',name: 'Users',component: Users },
      { path: '/rights',name: 'Rights',component: Rights },
      { path: '/roles',name: 'Roles',component: Roles }
    ] 
    }
  ]
})
//挂载路由导航守卫
router.beforeEach((to,from,next)=>{
  //to将要访问的路径
  //from从哪个路径跳转而来
  //next是一个函数，表示放行
//next()放行  next('/login')  强制跳转
  if(to.path === '/login') return next();
  //获取token
  const tokenStr = window.sessionStorage.getItem('token');
  if(!tokenStr)return next('/login');
  next();
})

export default router
